Electric-light cluster.



PATENTE-D AUC. C, 1907.

L. HRUSKA.-

,ELECTRIC LIGHT CLUSTER.

E27/@7660?. lamb* Mu/@ y wgvgws APPLICATION FILED'ABfM, 1905.

LOUIS' HRUSKA, or CHICAGO, ILLINois, lesiones or ennemi' 'ro esoneri Dserrors', or

` CHICAGC, immers.

ELECTRIC-LIGHT CLUSTER To all-'whom it may concern:

Be it 'known that I, Louis HRUSKA, a citizen ol the United States,residing at Chicago, in the countyoi Fig. 2, a vertical section on line2-2 ol Fig. l with thel shade and shade holder removed; Fig. 3, a planview of the removable member of the fixture; Fig. 4, a plan yview ofthestationary member oi the iixture, and Fig.

5, a detail section on line 5-5 of Fig. 3.

Like letters of reference vindicate likeparts in all the drawings.

ngeneralythe fixture-comprises two parts, one oi f which is' adapted tobe more or less permanently fixed to the wall 'of the room or otherwise,while the other, supporting the lamps,-is removable by a very simpleoperation-easily understood by any one. It will be obvious that thedevice can take a number Ci different 'forms according to the particularadaptation to use,

and, therefore, I do not purpose to liniit myself to any oneconstruction.

In the form shown in the drawings, A represents a hollow' shell,preferably of metal, which may be secured tothe ceiling by means of thetube or pipe A1, or be hung from a cord in any usual manner. To theshell A is preferably clamped a shade holder B, as for ex ample, bymeansv of the-screw Bl.

C represents the shade held in position on the holder by the screws ClCl. v Within the shell A, is a block D of insulating material,preferably porcelain, which is secured to the shell A by means ofthescrews Dl D1.

i Centrally in .this block, is set the socket D2 which is preferablymade of brass and screw threaded.

.l3ncircling thisl and also set into the porcelain block, is the Contactpiece D3 which is preferably made as shown in Fig. 4; that is, in theform of a hollow cylinder with a segmental part-cut therefrom.- I haverepresented the block D as consisting .of one piece of material,apertured to receive the socket and the contact piece, but

Vit is obvious that it might be made -up of a number of separate parts.The screw D4 extends through the :block D atithe place where the Contactpiece D3 is cut f away, and makes electrical Contact with the socket D2.

A washer D 5 may be provided, and between the washer. v

Speeiiication of Letters Patent. l

Appnmuon and nach 2v, niet.

ramasse ruig. e, reo?n Serial lilol 252,7641

.Gn the other side oi the block is similar screw D a taking into ltheContact piece D and provided with the washer D7, and this serves abinding post for the conductor El, the conductors E, El, it will. beunderstood, supplying the lamps with current.

The removable part ci the fixture is composed oi a shell F preierably olmetal to which are secured any number er' lamps GG vol any preferredtype, and in any desirevl` ina-nner. The lamps GG may, for example, beprovided with screw threaded nipples GHG?. For conven iene-e inassembling, .l preler to support the 4contact pieces in the lower partoi the fixture on removable cross piece l-l, which maybe secured to theshell Fby means oi the screws lill?. Outhoeross piece H is the block J'of noireonducting material preferably porcelain, secured thereto .in anydesired manner, as for example, Cy means oi the screws Jl. inte thisblock, is set centrally thereof, the screw .l adapted to screw into thesocket in the upper part oi the lixture. Surrounding the screw is thecoi rtafrt piece Il o similar size and iorm as the Contact pier-e DE inthe upper part of the lixture. The binding screw l* is in Contact withthe screw J, and a binding screw .l5 is in lle manner con! neeted with.the contact piece .l A

The wiring to the lamps may be arranged in any desired manner. ln thedrawing, i have shown two conductorsl l, lil, leading from the bindingscrews J4, .l5 respectively, and to the terminals oi one ,of the lmnpcircuits. These wires may be pped by other branch wires, as lor examplel?, K3, one pair 1ibading to each of the lamps ol the cluster. i I

l have thus described in detail, one form o my de vice, but it will beclear that the invention is suscepti ble oi embodiment in various formsoi construction and that considerable change might be unido lo moet varying conditions without departingirmn the spirit and purpose of myinvention` Tlmrelore, l dolot limit myself to the particular forms,devices andconstructions here shown.

The use and operation oi the device will perhaps have been madesulliciently clear bythe foregoing. lt is one of the purposes of myinvention te secure avery compact and simple forni nl' removableelectric-light cluster, and one which will be at the same time sightlyLil and /capable oi' being used by unskilled persons Without the otherby the ltwo Contact piecesDiA, 33, The latter parts, although cut awayso as to give convenient access to the socket and screw, will alwaystouch over a corisiderable portion oi their areas cannot 1 out or' lfoi" any other purpose, the shell li'is simply unserewerl from the upperpzirL oi the tixiure, leaving the wiring to 5,

.the himps undistiv'lie'd. .1f 'it is nece iry to get at 'any oi theseveral wirs leading to the lumpsy this may he enilydone byreinol'ingthe rr ,piece il. lliereiiiziy, ui Course.y he any number oi lutins, undthere lliinpd may he of any desired type.

I dann'.

1. In iin electric light lixtnre, the eoinhinution ol' :i fixed bleek 0iinsuluiiup; rnulerizil, hai'rine; :i Screw L centrally' thereof.servlnf.: Lies zin electrode. :intl un conrlntzl'inii' nniteriul struckfrom the renier ol .u 1`l.\' with 'n reniovzilile pnrt enrrylne' :ihlm-li oi ini; ruziieriui. a www derive ailluiitefi to en ew derive onthe l .il Meek i i :serving :i ,in ehelirode. :in fire o niaiterinlsiinlur tomlti .il uflzipteil 'lo he brought into (commet therewith whenhe 1mi-1K :1re in operative position. zin/l :i hlntlinu; posi.exit-urli: i through :in aperture 'in such e lui' elet-trollo 'niloVenturi, with such screw device.

h other :irt-

2. ln an electric light: ixtnre. mhinution o1' :i tir. i: liloek etinsnliuing.' ninterizil, a; ti-ew llerii'i: eeniriiily thereof,L'oriniim :in elwtrofh. :in ure oi' vout'lmtii insiteA rizil `sl'rnelifrom tho unter of such tlfvire, :i removable shell, :i reinorulile russpier-+- oii sur-li shell. :i l lo l ol" insulating' inziler'il seeuredto suoli erw tilt-rv, ri serliw device in snelililolfh serving :is uneleifi'rorle. und :in :ire of niulerizil similar io sut'h other :ire undinlziiitr-d to he broughtv int'o Contact: therewith when the pui-t9;:ii-iy in operative position.

Ii. ln :1n eleelrie light iixtnie, the (soniliiinitiori of twv) lepliriihle sections, one o said sections curi-,ringy ilu,- niiiiii tionchi vthe soutiens forniin: oney oi' the terminalsI ol thin` vir(4 .il'..v :i inetullie purl'. on tluother s( line terminals, the other :iplnrzillty ol' lmnp. lumi-emi up on un operi circuit. with means forsrlzurin'.; Hur-h srr- `toiellie'; :tml for losing the t-n nit lroin thenuiiu's .gli the lninyis. rompi-isili;1- u vonirul srrew on one ol ionwith whirli the c uw engages :intl forming;- ihe mrrespontline: terminnlo` they circuit through Huch section. :ind :i huir ot' tgrliinlrieontuct nieves on the ser ions urrzinnetl eoiit'rnlrvnli;y withrefzpect. to the screw th 'e sind :illnnted io l; liroug'hr into contuctwhen the si. tions :ire Screwed ioentlu-r, ill

rirnl Contact pieces heini; cnt :iwny :it oney side tn :recess to theother iifiir of terminals ineloser] thereby.

4. In :in electric lilg'ht iixtnre, the eumli'mnton of two miiuruhlesittions, one (if Suid sections ezirryiny; ilul innin line lerniiniilg,the other n pluriility of lnin1is connected nl on :in open'eirenit, withmezins It' securing such see- 'ions together :ind for el( ing thecircuit from the mziins through the lumps, eompi sing` a central screwon one of the mations forming one of the terminnls ol this circuit, :inietzillie nzirt on the other tion with which the screw ene-nues undforming; the corresponding terininul of the f-irruil through snelisection, und :i pziir of eonl'net piece@ on the tions uri-:miredvoneentrieally with respect: lo the svi-ew dev :md adapted to he broughtinlo eontliet when the see ions lire 1@crewed together,y sneh Contactivres in the form ot' uros les than [circles :intl grenier thun lnilfnire-les.

ln zin ele. rie light lixtnre, :i relatively lixell si in: zi lilotrl:of insulating; nizitoriail, u eeulriil s( 'ew sboeizited with Suidblock, :i vontuct pim :ii :tion eiiihedilel in the lilouk iind eonevntrsrriiw devine, Suid screw (lei/ine :1nd eohtzu't, piece living;Qonneelefl with the inuin line wires', in eiinihinution sul" with :iremovable section comprising' means for supporting :i pluriilit ofliinpsl connected np un :in open t-irvuil. :i ii ,tk oi' .i :llingmnt'erizll, :i iii-tml screw derive :issu initetl therewith, :intl iicontat, i piece :trennte in ross :welion einhechleli in suitl lilork,such screw derive :intl onlin-i pieve formingY the terminalsl of thelmnp eirruit.

4'. lii :in electric light fixture, :i relatively tixwl swtiozi 'ngz :iblock of insulatingv inziteriul in suitl .il amr-w (levil'e :issoeintetlwith simi hlm-k. Section eniluulrlml iu the il Willi' hlm-'lt :indroncentrie with suon screw devil'e. Suid Sri-eu' rleviw und contactpeeeheing' tonneeietl with the nniin iine wirt in onihirmtieu with nreinovuhle seglion vom :i :..isini forming' with the other t" sinj.: uniiielosure lor il uninet nieves :intl their connections supporting' :iplurnlii'r ol` lmnp sot'kots connue u] up on :in lllfll fll" (Luit, ;ihl: ul' insulating: niuleriul in such euse. :i rentrul sr w lmn'e:issoeiutod therowiih, :intl :i eonluel piel-H :trennte in cross sectioneniln'thled in szlifl lilotk, surli srrew tievire und eontuctpieretorinnler the lrrmiinils ol' the linnn tzirlfuit..

